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6.4 Replacement of the coupling spider
A rubber spider is used at the section connecting the pump main unit and the motor. It is
recommended that this spider be periodically inspected once a year or so. If the corner is
chipped or cracked, replace it. If the pump is started and stopped hundreds of times a day,
increase the inspection frequency.
To take out the spider, remove the four bolts which fix the motor to the pump main unit, and
remove the motor. Then the coupling can be removed and the spider taken out. After inspecting
the spider, mount the spider to either of the two coupling, and adjust the position so that both
claws of the couplings are engaged with each other as shown in Fig. 8.
Fig. 8 Replacement of the coupling spider
Connect the concave section (female) of the pump unit with the convex section (male) of the
motor, push the motor into the pump so that both connecting surfaces come completely into
contact with each other, and fix the motor with bolts.
